Anodic dissolution characteristics of Inconel 718 in C6H5K3O7 and NaNO3 solutions by pulse electrochemical machining

被引：60
作者：
Wang, Jingtao [1 ]
Xu, Zhengyang [1 ]
Wang, Jing [1 ]
Zhu, Di [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Natl Key Lab Sci & Technol Helicopter Transmiss, Nanjing 210016, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 183卷
基金：
中国国家自然科学基金;
关键词：
Electrochemical corrosion behaviour; Passivating; Film; Micro-pit structure; CITRIC-ACID; CORROSION BEHAVIOR; OXIDE-FILMS; HYDROGEN EVOLUTION; ALLOY; 690; ELECTROLYTE; WIRE; ELECTRODEPOSITION; RESISTANCE; TITANIUM;
D O I：
10.1016/j.corsci.2021.109335
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The mechanism by which electrolytic products are removed during ECM of Inconel 718 in a C6H5K3O7 electrolyte was clarified. Experimental results revealed that Cit3- ions decrease the amounts of flocculent and insoluble products in the machining region considerably. The resulting passivating film presented a looser, more porous structure than that from a NaNO3 solution. This made the Inconel 718 more prone to electrochemical corrosion. The uniformity and microscale nature of the micro-pit structure dispersed on the machined surface improved substantially as the current density increased. This improved the surface quality dramatically. Finally, the anodic dissolution characteristic models were established.
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页数：17
相关论文
共 63 条
[1]  
[Anonymous], 702712016 ISO
[2]   Cathodic hydrogen evolution in acidic solutions using electrodeposited nano-crystalline Ni-Co cathodes [J].
Badawy, W. A. ;
Nady, H. ;
Negem, M. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2014, 39 (21) :10824-10832
[3]   X-ray photoelectron spectroscopy study of the passive films formed on thermally sprayed and wrought Inconel 625 [J].
Bakare, M. S. ;
Voisey, K. T. ;
Roe, M. J. ;
McCartney, D. G. .
APPLIED SURFACE SCIENCE, 2010, 257 (03) :786-794
[4]   Electrochemical machining: new possibilities for micromachining [J].
Bhattacharyya, B ;
Mitra, S ;
Boro, AK .
ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING, 2002, 18 (3-4) :283-289
[5]   Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Cr, Mn, Fe, Co and Ni [J].
Biesinger, Mark C. ;
Payne, Brad P. ;
Grosvenor, Andrew P. ;
Lau, Leo W. M. ;
Gerson, Andrea R. ;
Smart, Roger St. C. .
APPLIED SURFACE SCIENCE, 2011, 257 (07) :2717-2730
[6]   Effect of temperature on the corrosion resistance and pitting behaviour of Alloy 31 in LiBr solutions [J].
Blasco-Tamarit, E. ;
Igual-Munoz, A. ;
Anton, J. Garcia ;
Garcia-Garcia, D. .
CORROSION SCIENCE, 2008, 50 (07) :1848-1857
[7]   Influence of surface modifications on pitting corrosion behavior of nickel-base alloy 718. Part 2: Effect of aging treatment [J].
Chen, Ting ;
John, Hendrik ;
Xu, Jing ;
Lu, Qiuhong ;
Hawk, Jeffrey ;
Liu, Xingbo .
CORROSION SCIENCE, 2014, 78 :151-161
[8]   EFFECT OF CITRIC-ACID AS A CHELATING AGENT ON ANODIC BEHAVIOR OF PURE IRON WITH POTENTIOSTATIC POLARIZATION AND CYCLIC VOLTAMMETRY METHODS [J].
CHU, CM ;
WAN, CC .
MATERIALS CHEMISTRY AND PHYSICS, 1993, 33 (3-4) :189-196
[9]   Analysis of the relationship between electrolyte characteristics and electrochemical machinability in PECM on invar (Fe-Ni)fine sheet [J].
Chun, K. H. ;
Kim, S. H. ;
Lee, E. S. .
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2016, 87 (9-12) :3009-3017
[10]   Further insight into the mechanism of Re-Ni electrodeposition from concentrated aqueous citrate baths [J].
Contu, F. ;
Taylor, S. R. .
ELECTROCHIMICA ACTA, 2012, 70 :34-41
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